Control system for steplessly variable power transmission

摘要

A steplessly variable power transmission includes a load change detecting device for detecting a change speed in an engine load when an engine load zone to which a value of the engine load belongs is changed from an intermediate zone to a specific zone other than the intermediate zone. A speed ratio hold device is provided for maintaining the speed ratio at a constant value determined in accordance with the change speed in the engine load obtained through the load detecting device and for providing the speed ratio control means with the constant value of the speed ratio as a control signal. The speed ratio is fixed at a value in accordance with change speed in an acceleration pedal stroke under a kick down and engine brake conditions.